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Community Resource Guide to Sound Barriers and Noise Reduction

As increasing numbers of motorists use our highway system, the sounds generated by these vehicles adversely affect residents. The Maryland Department of Transportation State Highway Administration (MDOT SHA) works hard to reduce the impact of highway traffic noise on communities that meet federally regulated eligibility criteria for noise abatement.

To determine eligibility, MDOT SHA investigates highway traffic noise impacts for communities that are next to existing state highways, in areas where a new highway is being constructed and where existing highways are expanded. Based on MDOT SHA’s Sound Barrier Policy, we provide reasonable and feasible noise abatement solutions where appropriate. To learn more, select from the links below. Additional resources are found in the resources section at the right-hand side of each page. If you have questions, contact us.

Highway Traffic NoiseSound and noise, causes of traffic noise, reducing traffic noise impacts and sound barriers

Noise AnalysisMDOT SHA’s environmental policy, highway traffic noise analysis and
highway traffic noise measurement

Type I ProgramThe Type I Program is for construction of sound barriers along new highway construction and along existing highways being expanded

Type II ProgramThe Type II Program is for sound barrier consideration where the majority of residences pre-date the construction of an existing highway.

Frequently Asked QuestionsFrequently Asked Questions



Review the information for our Type I and Type II programs to learn more about our policy on noise abatement. To submit a highway traffic noise inquiry, please complete the online form. Your inquiry will be investigated, and you will receive a response.

For additional questions, contact us at:

Office of Highway Development
Maryland State Highway Administration
707 North Calvert Street
Baltimore, Maryland 21202